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为了降低严寒地区建筑物的耗热量 ,提高室内热环境质量 ,研究了热桥出现的部位与表面温度分布的一般规律 ,测试了砌体结构建筑热桥部位的热工数据 ,分析了热桥对外墙体平均传热系数的影响趋势 .结果表明 ,影响外墙平均传热系数的关键是热桥面积和热桥部位的传热系数与外墙主体传热系数的差值 ;当外墙主体的传热系数较小时 ,热桥对外墙的传热系数的影响更加明显 ;在节能建筑工程设计中 ,应优先考虑能防止建筑热桥产生的外保温复合墙体 .
In order to reduce the heat consumption of building in severe cold area and improve the indoor thermal environment quality, the general rule of temperature distribution on the site and surface of the thermal bridge was studied. The thermal data of the thermal bridge site of the masonry structure was tested. The results show that the key factors affecting the average heat transfer coefficient of the external wall are the difference between the thermal bridge area and the heat transfer coefficient at the thermal bridge and the external heat transfer coefficient of the external wall. When the heat transfer coefficient is small, the influence of thermal bridge on the heat transfer coefficient of the external wall is more obvious. In the design of energy-saving building, the external thermal insulation composite wall that can prevent the building thermal bridge from occurring should be prioritized.